oncall-engine/engine/apps/integrations
Vadim Stepanov b2f4ffb98a
apps.get_model -> import (#2619)
# What this PR does

Remove
[`apps.get_model`](https://docs.djangoproject.com/en/3.2/ref/applications/#django.apps.apps.get_model)
invocations and use inline `import` statements in places where models
are imported within functions/methods to avoid circular imports.

I believe `import` statements are more appropriate for most use cases as
they allow for better static code analysis & formatting, and solve the
issue of circular imports without being unnecessarily dynamic as
`apps.get_model`. With `import` statements, it's possible to:

- Jump to model definitions in most IDEs
- Automatically sort inline imports with `isort`
- Find import errors faster/easier (most IDEs highlight broken imports)
- Have more consistency across regular & inline imports when importing
models

This PR also adds a flake8 rule to ban imports of `django.apps.apps`, so
it's harder to use `apps.get_model` by mistake (it's possible to ignore
this rule by using `# noqa: I251`). The rule is not enforced on
directories with migration files, because `apps.get_model` is often used
to get a historical state of a model, which is useful when writing
migrations ([see this SO answer for more
details](https://stackoverflow.com/a/37769213)). So `apps.get_model` is
considered OK in migrations (even necessary in some cases).

## Checklist

- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)
2023-07-25 09:43:23 +00:00
..
metadata Remove integration html instructions (#2627) 2023-07-25 04:31:28 +00:00
mixins apps.get_model -> import (#2619) 2023-07-25 09:43:23 +00:00
templates Remove integration html instructions (#2627) 2023-07-25 04:31:28 +00:00
tests Remove integration html instructions (#2627) 2023-07-25 04:31:28 +00:00
__init__.py World, meet OnCall! 2022-06-03 08:09:47 -06:00
middlewares.py Add middleware to catch exception for missing integration, reduce spamminess of logs 2022-10-13 17:18:22 -06:00
tasks.py apps.get_model -> import (#2619) 2023-07-25 09:43:23 +00:00
urls.py remove deprecated heartbeat_heartbeat table/model (#2534) 2023-07-17 01:38:04 -04:00
views.py remove deprecated heartbeat_heartbeat table/model (#2534) 2023-07-17 01:38:04 -04:00